Year Percent 1992-01-01 4.10776000000000000 1993-01-01 6.62463000000000100 1994-01-01 4.05050000000000000 1995-01-01 4.61726000000000000 1996-01-01 2.81855999999999970 1997-01-01 2.53724000000000000 1998-01-01 7.33608000000000000 1999-01-01 11.74610000000000000 2000-01-01 10.78000000000000000 2001-01-01 8.30156000000000000 2002-01-01 4.36201999999999900 2003-01-01 1.89264000000000000 2004-01-01 1.55067000000000000 2005-01-01 1.12859000000000000 2006-01-01 0.78181499999999990 2007-01-01 0.58937000000000000 2008-01-01 0.46732700000000005 2009-01-01 0.80741900000000000 2010-01-01 2.25132000000000000 2011-01-01 3.60406000000000000 2012-01-01 4.31068000000000050 2013-01-01 4.37972000000000000 2014-01-01 4.27637000000000000 2015-01-01 6.09714000000000040 2016-01-01 5.87229000000000050